: Actinomycosis of the oral cavity is not common, though actinomyces species often occur as normal commensals in cavity. They gain entry into deep tissue to cause infection and consequent damage whenever there mucosa by injury or neoplastic process. The case being discussed here a male, aged 62 years, who presented with an ulcero-proliferative lesion over left buccal mucosa. A punch biopsy was ...

Two strains of Actinomyces showing antibacterial properties of specialinterest were isolated from greenhouse soil during a search for antibiotics effective agaist gram-negative and acid-fast microorganisms. One strain, designated as A-10, appears to be a variant of Actinomyces lavenduke. Although a similarity to streptothricin (Waksman, 1945) was noted in the spectrum obtained from limited anti...

Actinomyces is a Gram-positive, filamentous bacterium that normally colonizes mucosal areas. Pelvic actinomycosis is a chronic granulomatous disease caused by Actinomyces israelii that frequently mimics ovarian tumors during presentation. It is diagnosed after surgery in most of the cases. Intravenous penicillin is the most preferred therapeutic agent, and it requires hospitalization up to one ...

Type strains and 62 clinical isolates of Prevotella intermedia and Prevotella nigrescens were typed with the use of genomic DNA fingerprints and rRNA gene probes. The strains were further serotyped with monoclonal antibodies and characterized with SDS-PAGE, enzymatic activities, hemolysis and hemagglutination and coaggregation with Streptococcus and Actinomyces spp. P. intermedia and P. nigresc...